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Assume that the build-up of fatty tissue on the wall of an artery decreased the radius by 10 percent. Determine by how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?
Find out the direction of the train motion
The electric potential due to a point charge is given by V=kq/rwhere q is the charge, r is the distance from q and k = 8.99x10-9 Nm2/C2. Show that the SIunit of electric potential is a volt.
A fine metal foil separates one end of 2 pieces of opticallyflat glass, How thick is the foil
An airplane is flying with a velocity of 90 at an angle of 22 above the horizontal. When the plane is a distance 122 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
AIlya and Anya each can run at the speed of 8.20 and walk at a speed of 4.00. They set off together on a route of length 5. 0. Anya walks half of the distance and runs the other half, while AIlya walks half of the time and runs the other half.
A Geiger counter reading of a radioactive sample is initially 6920 counts per minute. What is the sample's half-life
Three springs, connected in series, with K1 =30, K2 = 40 and K3 = 50 N/m are suspended vertically with a 20 kg mass attached to the bottom. What frequency will the three-spring system oscillate?
an object 10.0-kg slides upward on a slippery vertical wall a force of 60n at an angle of 60 degrees. determine the normal force exerted on the object by the wall
Sphere A has a mas m and is moving with velocity v (along +x axis). It makes a head-on elastic collistion with a stationary shpere B of mass 2m. after the collisiion, the spee of sphere B is 2v/3. What is the velocity of Sphere A in terms of v after ..
A very powerful vacuum cleaner has a hose 2.95 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift
A small metal sphere of mass 6.9 g and charge 5.9 μC is firedwith an initial speed of 4.9 m/s directly toward the center of asecond metal sphere carrying charge 7.2 μC. This second sphereis held fixed.
A hydrogen atom is in its third excited state (n = 4). Using the Bohr theory of the atom, calculate the following. the radius of the orbit. the linear momentum of the electron
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